Every time Bert slices onions, the onions burn his eyes and tears run down his face. One day he opened the silverware drawer and pulled out the knife that he uses only to peel onions and immediately started to shed tears from the sight of the knife. In this situation, the onion is the __________, and the knife is the __________.

Question

Quizplus · Accepted Answer

The onion is the unconditioned stimulus that naturally causes tears, while the knife has become a conditioned stimulus that triggers tears due to its association with slicing onions.

Every Time Bert Slices Onions, the Onions Burn His Eyes